Theoretical predictions of thermodynamic parameters of adsorption of nitrogen containing environmental contaminants on kaolinite

Verfasser / Beitragende:
[Andrea Scott, Elizabeth Burns, Brandon Lafferty, Frances Hill]
Ort, Verlag, Jahr:
2015
Enthalten in:
Journal of Molecular Modeling, 21/2(2015-02-01), 1-16
Format:
Artikel (online)
ID: 605513503
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024 7 0 |a 10.1007/s00894-015-2577-5  |2 doi 
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245 0 0 |a Theoretical predictions of thermodynamic parameters of adsorption of nitrogen containing environmental contaminants on kaolinite  |h [Elektronische Daten]  |c [Andrea Scott, Elizabeth Burns, Brandon Lafferty, Frances Hill] 
520 3 |a In this study thermodynamic parameters of adsorption of nitrogen containing environmental contaminants (NCCs, 2,4,6, trinitrotoluene (TNT), 2,4-dinitrotoluene (DNT), 2,4-dinitroanisole (DNAN), and 3-one-1,2,4-triazol-5-one (NTO)) interacting with the tetrahedral and octahedral surfaces of kaolinite were predicted. Adsorption complexes were investigated using a density functional theory and both periodic and cluster approach. The complexes, modeled using the periodic boundary conditions approach, were fully optimized at the BLYP-D2 level to obtain the structures and adsorption energies. The relaxed kaolinite-NCCs structures were used to prepare cluster models to calculate thermodynamic parameters and partition coefficients at the M06-2X-D3 and BLYP-D2 levels from the gas phase. The entropy effect on the Gibbs free energies of adsorption of NCCS on kaolinite was also studied and compared with available experimental data. The results showed that in all calculated models, the NCCs molecules are physisorbed and they favor a parallel orientation toward both kaolinite surfaces. It was found that all calculated NCCs compounds are more stable on the octahedral than on the tetrahedral surface of kaolinite. The Gibbs free energies and partition coefficients were also predicted for interactions of NCCs with Na-kaolinite from aqueous solution. Calculations revealed adsorption of NCCs is effective from the gas phase on both cation free kaolinite surfaces and on Na-kaolinite from aqueous solution at room temperature. Theoretical data were validated against experimental results, and the reasons for small differences between calculated and measured partition coefficients are discussed. 
540 |a Springer-Verlag Berlin Heidelberg (outside the USA), 2015 
690 7 |a Binding  |2 nationallicence 
690 7 |a Clay  |2 nationallicence 
690 7 |a Distribution  |2 nationallicence 
690 7 |a Modeling  |2 nationallicence 
690 7 |a Nitroaromatic  |2 nationallicence 
700 1 |a Scott  |D Andrea  |u U. S. Army Engineer Research and Development Center (ERDC), 3909 Halls Ferry Rd., 39180, Vicksburg, MS, USA  |4 aut 
700 1 |a Burns  |D Elizabeth  |u Badger Technical Services, LLC, 3909 Halls Ferry Rd., 39180, Vicksburg, MS, USA  |4 aut 
700 1 |a Lafferty  |D Brandon  |u U. S. Army Engineer Research and Development Center (ERDC), 3909 Halls Ferry Rd., 39180, Vicksburg, MS, USA  |4 aut 
700 1 |a Hill  |D Frances  |u U. S. Army Engineer Research and Development Center (ERDC), 3909 Halls Ferry Rd., 39180, Vicksburg, MS, USA  |4 aut 
773 0 |t Journal of Molecular Modeling  |d Springer Berlin Heidelberg  |g 21/2(2015-02-01), 1-16  |x 1610-2940  |q 21:2<1  |1 2015  |2 21  |o 894 
856 4 0 |u https://doi.org/10.1007/s00894-015-2577-5  |q text/html  |z Onlinezugriff via DOI 
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950 |B NATIONALLICENCE  |P 700  |E 1-  |a Scott  |D Andrea  |u U. S. Army Engineer Research and Development Center (ERDC), 3909 Halls Ferry Rd., 39180, Vicksburg, MS, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Burns  |D Elizabeth  |u Badger Technical Services, LLC, 3909 Halls Ferry Rd., 39180, Vicksburg, MS, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Lafferty  |D Brandon  |u U. S. Army Engineer Research and Development Center (ERDC), 3909 Halls Ferry Rd., 39180, Vicksburg, MS, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Hill  |D Frances  |u U. S. Army Engineer Research and Development Center (ERDC), 3909 Halls Ferry Rd., 39180, Vicksburg, MS, USA  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Journal of Molecular Modeling  |d Springer Berlin Heidelberg  |g 21/2(2015-02-01), 1-16  |x 1610-2940  |q 21:2<1  |1 2015  |2 21  |o 894